Whe my friend's daughter was 3 or 4 she used to think the Eminem song "Without Me" that starts "Two trailerpark girls go round the outside" actually went "Two trailerpark girls get brownie outside, brownie outside"...living in a trailer park, this was very exciting for her! haha!
A childhood belief about misheard lyrics

others believed things like this
- I used to believe,there was a little person inside my Dad's box Brownie camera.— Sandra R
- I thought that the difference between girls and boys was that girls have teeth.
Anon - That song that goes:
I'll never let you go...
I thought he was singing:
Another machine gun...
Haha.— Kelle - I used to think the raper eminem was spelled M&M.— Rambles
- I used to think it was possible for girls to pee standing up. I even tried.Anon
- I used to believe that girls pee was in their poop, because they have no penis.— s